56550556020 has 288 divisors, whose sum is σ = 186343597440. Its totient is φ = 12776064000.

The previous prime is 56550556009. The next prime is 56550556033. The reversal of 56550556020 is 2065505565.

It is a self number, because there is not a number n which added to its sum of digits gives 56550556020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 145373986 + ... + 145374374.

It is an arithmetic number, because the mean of its divisors is an integer number (647026380).

Almost surely, 2^56550556020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56550556020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93171798720).

56550556020 is an abundant number, since it is smaller than the sum of its proper divisors (129793041420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56550556020 is a wasteful number, since it uses less digits than its factorization.

56550556020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863 (or 854 counting only the distinct ones).

The product of its (nonzero) digits is 225000, while the sum is 39.

The spelling of 56550556020 in words is "fifty-six billion, five hundred fifty million, five hundred fifty-six thousand, twenty".